DLinDB-SheikhEsmaily
... Over time, additional, more complex kinds of databases and DBMS have appeared. For example, distributed databases keep information at a variety of sites connected by networks In the extreme, users may be interested in obtaining information from all kinds of sources, including nondatabases such as fi ...
... Over time, additional, more complex kinds of databases and DBMS have appeared. For example, distributed databases keep information at a variety of sites connected by networks In the extreme, users may be interested in obtaining information from all kinds of sources, including nondatabases such as fi ...
Introduction to Database Systems, Data Modeling and SQL
... 2. Establish a separate table for each determinant and the columns it determines. The determinant becomes the key of the new table. 3. Name the new tables. 4. Remove only the determined columns for the original table. Leave the determinant columns as the cross reference between the original and new ...
... 2. Establish a separate table for each determinant and the columns it determines. The determinant becomes the key of the new table. 3. Name the new tables. 4. Remove only the determined columns for the original table. Leave the determinant columns as the cross reference between the original and new ...
Understanding ArcSDE
... specific DBMS schema used to represent various geographic datasets and for domain-specific logic, which maintains the integrity and utility of the underlying records. In effect, the DBMS is used as an implementation mechanism for geographic datasets. ArcSDE is part of the multitier architecture (app ...
... specific DBMS schema used to represent various geographic datasets and for domain-specific logic, which maintains the integrity and utility of the underlying records. In effect, the DBMS is used as an implementation mechanism for geographic datasets. ArcSDE is part of the multitier architecture (app ...
Summary Management
... Complex Cross-Tab reports may use more client memory for display than Tabular report (depending on amount of data returned) Can avoid these if a tabular report shows the same data ...
... Complex Cross-Tab reports may use more client memory for display than Tabular report (depending on amount of data returned) Can avoid these if a tabular report shows the same data ...
DataGarage: Warehousing Massive Performance Data on
... Many design decisions behind DataGarage were guided by the lessons we learnt from our previous unsuccessful attempts of using existing solutions to warehouse performance data. At a high level, DataGarage and HadoopDB have similarities—they both use TableStore for storage and MapReduce for query proc ...
... Many design decisions behind DataGarage were guided by the lessons we learnt from our previous unsuccessful attempts of using existing solutions to warehouse performance data. At a high level, DataGarage and HadoopDB have similarities—they both use TableStore for storage and MapReduce for query proc ...
Slides from Lecture 14 - Courses - University of California, Berkeley
... • A row should not be inserted in the referencing (child) table unless there already exists a matching entry in the referenced table • Inserting into the parent table should not cause referential integrity problems • Sometimes a special NULL value may be used to create child entries without a parent ...
... • A row should not be inserted in the referencing (child) table unless there already exists a matching entry in the referenced table • Inserting into the parent table should not cause referential integrity problems • Sometimes a special NULL value may be used to create child entries without a parent ...
No Slide Title - California State University Channel Islands
... • CREATE TABLE: Creates a table and defines its columns and their data types. • CREATE SYNONYM: Creates an alternate name for a table or view. • CREATE VIEW: Defines a logical table, or view of data derived from columns and rows of existing tables and views. • CREATE INDEX: Creates an index on one o ...
... • CREATE TABLE: Creates a table and defines its columns and their data types. • CREATE SYNONYM: Creates an alternate name for a table or view. • CREATE VIEW: Defines a logical table, or view of data derived from columns and rows of existing tables and views. • CREATE INDEX: Creates an index on one o ...
Oracle Database 12c for Data Warehousing and Big Data
... enable users to query any amount of data volumes. It is the ability to apply multiple CPU and IO resources to the execution of a single database operation. Oracle’s parallel architecture allows any query to be parallelized, and Oracle dynamically chooses the optimal degree of parallelism for every q ...
... enable users to query any amount of data volumes. It is the ability to apply multiple CPU and IO resources to the execution of a single database operation. Oracle’s parallel architecture allows any query to be parallelized, and Oracle dynamically chooses the optimal degree of parallelism for every q ...
Chapter 21:Application Development and Administration
... Improve performance by storing a denormalized relation • E.g., store join of account and depositor; branch-name and balance information is repeated for each holder of an account, but join need not be computed repeatedly. • Price paid: more space and more work for programmer to keep relation consis ...
... Improve performance by storing a denormalized relation • E.g., store join of account and depositor; branch-name and balance information is repeated for each holder of an account, but join need not be computed repeatedly. • Price paid: more space and more work for programmer to keep relation consis ...
“User defined types and nested tables in object relational databases”
... the time and, over the last 25 years, has come to dominate the database market. With the rise in popularity of object oriented programming in the late 1980s developers began to propose alternatives and extensions to RDBMS in order to include support for objects. The two main proposals were for objec ...
... the time and, over the last 25 years, has come to dominate the database market. With the rise in popularity of object oriented programming in the late 1980s developers began to propose alternatives and extensions to RDBMS in order to include support for objects. The two main proposals were for objec ...
Making Database backed Websites
... Since doing something a set number of times is so common there is a shorthand for it. for ($i=0; $i < 10; $i++) { print $i."
\n"; ...
... Since doing something a set number of times is so common there is a shorthand for it. for ($i=0; $i < 10; $i++) { print $i."
\n"; ...
Transparent - Indico
... Tests on Oracle Heterogeneous Connectivity and Streams based replication Laura Iannone's thesis available at: http://etd.adm.unipi.it/theses/available/etd-0621005-153510/ Oracle solutions to the Heterogeneous Connectivity problem: • Transparent Gateways: only provides gateways for specific non-Orac ...
... Tests on Oracle Heterogeneous Connectivity and Streams based replication Laura Iannone's thesis available at: http://etd.adm.unipi.it/theses/available/etd-0621005-153510/ Oracle solutions to the Heterogeneous Connectivity problem: • Transparent Gateways: only provides gateways for specific non-Orac ...
Database transaction
... All databases permit users to set their default isolation levels. Perfect isolation levels chosen prevent applications from introducing errors such as 1,Dirty reads, 2,Repeatable reads and 3,Phantom reads 1)Dirty reads: When the first transaction reads uncommitted changes made by the second transact ...
... All databases permit users to set their default isolation levels. Perfect isolation levels chosen prevent applications from introducing errors such as 1,Dirty reads, 2,Repeatable reads and 3,Phantom reads 1)Dirty reads: When the first transaction reads uncommitted changes made by the second transact ...
System Administration Basics
... BB/WebCT Service Packs and Hotfixes, Oracle upgrades, security patches Try on test system first (preferably a copy of prod). Backup database and bea813/bea920 directory before. BB still learning also. Expect an install to fail to play it safe. Build in downtime to restore database each time. Oracle ...
... BB/WebCT Service Packs and Hotfixes, Oracle upgrades, security patches Try on test system first (preferably a copy of prod). Backup database and bea813/bea920 directory before. BB still learning also. Expect an install to fail to play it safe. Build in downtime to restore database each time. Oracle ...
DataGuard_for_RAC_migrations_v2 - Indico
... • The Data Guard based migration procedure has been used this year at CERN: – we migrated all production and validation databases ~15 systems in total – we moved from RHEL 3 to RHEL 4 at the same ...
... • The Data Guard based migration procedure has been used this year at CERN: – we migrated all production and validation databases ~15 systems in total – we moved from RHEL 3 to RHEL 4 at the same ...
CGI Programming: Part 1 Robert M. Dondero, Ph.D. Princeton University 1
... Princeton University ...
... Princeton University ...
Chapter 1: Introduction
... Application programmers – interact with system through DML calls Sophisticated users – form requests in a database query language ...
... Application programmers – interact with system through DML calls Sophisticated users – form requests in a database query language ...
Print this article - The Clute Institute
... contains data about only ONE concept. Without database normalization serious operational errors can occur in the database, including but not limited to, insertion/deletion/update anomalies. Insertion anomalies refer to problems occurring when inserting new items into the database, deletion anomalies ...
... contains data about only ONE concept. Without database normalization serious operational errors can occur in the database, including but not limited to, insertion/deletion/update anomalies. Insertion anomalies refer to problems occurring when inserting new items into the database, deletion anomalies ...
Installing & Configuring Controller 8.3 server Proven Practice
... creating a development server, pre-sales local laptop installation or a test VMWare environment. By following these “best practices” the intention is to make server installation as easy as possible, with the minimum of possibility for errors/issues. Later, this document gives some links for where to ...
... creating a development server, pre-sales local laptop installation or a test VMWare environment. By following these “best practices” the intention is to make server installation as easy as possible, with the minimum of possibility for errors/issues. Later, this document gives some links for where to ...
Document
... • A view is created with the CREATE VIEW command • A view cannot be modified; to change a view, it must be dropped and then re-created, or the CREATE OR REPLACE VIEW command must be used • Any DML operation can be performed on a simple query if it does not violate a constraint • A view that contains ...
... • A view is created with the CREATE VIEW command • A view cannot be modified; to change a view, it must be dropped and then re-created, or the CREATE OR REPLACE VIEW command must be used • Any DML operation can be performed on a simple query if it does not violate a constraint • A view that contains ...
PPT_ch08-is333 - Ms. Raghad Altikriti
... • Batch update routine pools multiple transactions into a single batch – Update master table field in a single operation ...
... • Batch update routine pools multiple transactions into a single batch – Update master table field in a single operation ...